CN108587286B - Preparation method of marine organism fouling prevention coating - Google Patents
Preparation method of marine organism fouling prevention coating Download PDFInfo
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- CN108587286B CN108587286B CN201810239779.0A CN201810239779A CN108587286B CN 108587286 B CN108587286 B CN 108587286B CN 201810239779 A CN201810239779 A CN 201810239779A CN 108587286 B CN108587286 B CN 108587286B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1637—Macromolecular compounds
Abstract
The invention relates to the field of metal coordination polymers, in particular to a preparation method of a marine biofouling prevention coating; the method comprises the following steps: step 1: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 1-4: 0.1-0.4: 7-10, and adding the mixture into a three-neck flask to obtain a first mixture; step 2: stirring the first mixture at 70-90 deg.C for 15-40min to dissolve capsaicin and anhydrous cupric chloride in anhydrous ethanol to obtain a first solution; and step 3: and carrying out reflux reaction on the first solution for 3-10h to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating. The capsaicin-like polymer is prepared by catalytic polymerization of copper ions, is applied to the antifouling paint, has better environmental protection property, and can effectively protect marine facilities from being polluted by organisms.
Description
Technical Field
The invention relates to the field of metal coordination polymers, in particular to a preparation method of a marine biofouling prevention coating.
Background
The ocean accounts for 71 percent of the surface area of the earth, contains infinite natural resources, and has great significance for acquiring new energy by vigorously developing ocean resources under the condition that the current land resources, particularly non-renewable resources, are gradually exhausted. However, when one has an invaluable expectation for this piece of temporarily undeveloped earth, one also faces a significant challenge — marine biofouling. The phenomenon in which microbes, plants, and animals in the sea adsorb to and damage facilities submerged under the sea water is called marine biofouling. The huge marine biofouling system greatly harms ship wharfs and marine facilities, and the harm brought by the huge marine biofouling system is mainly reflected in the following three aspects: metal corrosion is accelerated; affecting the yield and quality of the aquaculture industry; affecting the normal use of the marine facility. The adhesion of marine organisms increases the advancing resistance of the ship, so that the sailing speed is reduced, and the oil consumption is increased; it may also cause failures of facilities, meters, etc. in the ocean, reduce the service life of these facilities, affect their normal functions, and even cause forced shut-down or production stoppage, with huge economic losses. The loss caused by the attachment of marine organisms is difficult to calculate accurately, the vitality of the fouling organisms is tough, and the marine fouling problem becomes a difficult obstacle for mankind to conquer the sea. Therefore, with the deep exploration and development of marine resources, the problems caused by biofouling are attracting more and more attention, and people are prompted to continuously explore and take various measures to prevent the attachment and growth of the organisms.
Through continuous efforts and exploration, various antifouling methods and strategies are found, and in many methods and strategies, the method for coating the antifouling paint is the method with the lowest cost, convenient operation, the most effective and the most popular. The antifouling paint is prepared through adding antifouling agent, such as cuprous oxide, organic tin, zinc oxide, etc. into paint and releasing the antifouling agent gradually in marine environment to expel and kill fouling organism. After long-term research, the antifouling paint can achieve obvious antifouling effect, but has some defects. The released antifouling agents are all toxic chemical substances, which can affect the self-renewal process of marine organisms, cause the mutation of life bodies and seriously harm the marine ecological environment. In addition, the toxic substances are enriched by the food chain and will ultimately also be harmful to human health. Therefore, the amount of such toxic antifouling paint to be used has been controlled internationally for a long time and even regulated in the clear.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a preparation method of an environment-friendly marine biofouling prevention coating with long effective period.
In order to solve the technical problems, the invention adopts the technical scheme that:
the preparation method of the marine biofouling prevention coating comprises the following steps:
step 1: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 1-4: 0.1-0.4: 7-10, and adding the mixture into a three-neck flask to obtain a first mixture;
step 2: stirring the first mixture at 70-90 deg.C for 15-40min to dissolve capsaicin and anhydrous cupric chloride in anhydrous ethanol to obtain a first solution;
and step 3: and carrying out reflux reaction on the first solution for 3-10h to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
The invention has the beneficial effects that: according to the preparation method of the marine biofouling prevention coating, the capsaicin-like polymer is prepared by catalytic polymerization of copper ions and is applied to the antifouling coating, so that marine facilities can be effectively protected from biofouling; because the capsaicin is a natural product extracted from the capsicum, compared with the antifouling paint adopting antifouling agents such as cuprous oxide, organic tin, zinc oxide and the like in the traditional technology, the antifouling paint has better environmental protection property, and effectively avoids marine ecological pollution caused by gradual release of the paint in seawater.
Drawings
FIG. 1a is a graph showing the results of an anti-Staphylococcus aureus test on an insulated white glass sheet according to example 8 of the present invention;
FIG. 1b is a graph showing the results of a Staphylococcus aureus resistance test on the marine biofouling prevention coating prepared in example 8 of the present invention;
FIG. 2a is a graph showing the results of an E.coli resistance test on a blank glass sheet according to example 8 of the present invention;
FIG. 2b is a schematic diagram showing the results of the Escherichia coli resistance test of the marine biofouling prevention coating prepared in example 8 of the present invention.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the capsaicin-like polymer is prepared by catalytic polymerization of copper ions, is applied to the antifouling paint, has better environmental protection property, and can effectively protect marine facilities from being polluted by organisms.
The invention provides a preparation method of a marine biofouling prevention coating, which comprises the following steps:
step 1: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 1-4: 0.1-0.4: 7-10, and adding the mixture into a three-neck flask to obtain a first mixture;
step 2: stirring the first mixture at 70-90 deg.C for 15-40min to dissolve capsaicin and anhydrous cupric chloride in anhydrous ethanol to obtain a first solution;
and step 3: and carrying out reflux reaction on the first solution for 3-10h to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
According to the preparation method of the coating for preventing marine biofouling, the capsaicin-like polymer is prepared by catalytic polymerization of copper ions and applied to the antifouling coating, so that marine facilities can be effectively protected from biofouling; because the capsaicin is a natural product extracted from the capsicum, compared with the antifouling paint adopting antifouling agents such as cuprous oxide, organic tin, zinc oxide and the like in the traditional technology, the antifouling paint has better environmental protection property, and effectively avoids marine ecological pollution caused by gradual release of the paint in seawater.
Furthermore, in the preparation method of the marine biofouling prevention coating, the capsaicinoid is prepared by taking urushiol or cardanol and N-hydroxymethyl acrylamide as main raw materials through a Friedel-crafts reaction.
The solvent used in the polymerization reaction of the capsaicinoid is a polar solvent, specifically methanol, ethanol, isopropanol, xylene, N-dimethylformamide and the like; wherein, the ethanol has better dissolving effect on the capsaicinoid and smaller toxicity.
Further, in the preparation method of the coating for preventing marine biofouling, the step 1 is: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 2-3: 0.15-0.25: 7.5-8.5, and adding into a three-neck flask to obtain a first mixture.
By optimizing the mass ratio of the capsaicin, the anhydrous copper chloride and the anhydrous ethanol, the capsaicin and the anhydrous copper chloride are fully dissolved to form a uniform system, so that the reaction is fully carried out.
Further, in the preparation method of the coating for preventing marine biofouling, the step 1 is: the capsaicin, anhydrous copper chloride and anhydrous ethanol are mixed according to the mass ratio of 2: 0.17: 7.89, and added into a three-neck flask to obtain a first mixture.
By optimizing the mass ratio of the capsaicin, the anhydrous copper chloride and the anhydrous ethanol, the capsaicin and the anhydrous copper chloride are fully dissolved to form a uniform system, so that the reaction is fully carried out.
Further, in the preparation method of the coating for preventing marine biofouling, the step 2 is: stirring the first mixture at 80 deg.C for 30min to dissolve the capsaicin and anhydrous cupric chloride in anhydrous ethanol to obtain a first solution.
The reason for the selected reaction time is that the urushiol or cardanol type capsaicin is difficult to dissolve, so that the stirring time is selected so as to fully dissolve the capsaicin in the solvent under full stirring, which is favorable for smooth polymerization reaction and finally form a uniform coating film. If the time is too short, the dissolution is incomplete and there are significant particles in the film.
The selected reaction temperature is selected to ensure that the reaction is smoothly carried out, so that the reaction rate can be increased, the polymerization reaction is promoted, and the reaction time is shortened; if the temperature is too low, the reaction proceeds too slowly; considering the boiling point of the solvent ethanol, if the temperature is too high, the reaction system is always in an bumping state, and the reaction is influenced.
Further, in the preparation method of the coating for preventing marine biofouling, the step 3 is: and carrying out reflux reaction on the first solution for 4-7h to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
Further, in the preparation method of the coating for preventing marine biofouling, the step 3 is: and carrying out reflux reaction on the first solution for 5 hours to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
The selected reaction time is obtained by monitoring the viscosity in the experimental process, the viscosity of the system is gradually increased along with the progress of polymerization reaction, the reaction is carried out to a certain degree, a proper viscosity is obtained, and the film forming performance is good; if the time is too short, the reaction is incomplete, and the film-forming property is poor; if the reaction time is too long, the viscosity of the system is too high, even the system is crosslinked, and the film is not easy to coat.
Example 1
A preparation method of a marine biofouling prevention coating comprises the following steps:
step 1: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 1: 0.1: 7, and adding the mixture into a three-neck flask to obtain a first mixture; the capsaicin is prepared by taking urushiol and N-hydroxymethyl acrylamide as main raw materials through Friedel-crafts reaction;
step 2: stirring the first mixture at 70 ℃ for 15min to dissolve the capsaicin and the anhydrous copper chloride in the anhydrous ethanol to obtain a first solution;
and step 3: and carrying out reflux reaction on the first solution for 3 hours to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
Example 2
A preparation method of a marine biofouling prevention coating comprises the following steps:
step 1: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 4: 0.4: 10, and adding the mixture into a three-neck flask to obtain a first mixture; the capsaicin is prepared by taking cardanol and N-hydroxymethyl acrylamide as main raw materials through Friedel-crafts reaction;
step 2: stirring the first mixture at 90 ℃ for 40min to dissolve the capsaicin and the anhydrous copper chloride in the anhydrous ethanol to obtain a first solution;
and step 3: and carrying out reflux reaction on the first solution for 10 hours to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
Example 3
A preparation method of a marine biofouling prevention coating comprises the following steps:
step 1: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 2: 0.15: 7.5, and adding the mixture into a three-neck flask to obtain a first mixture; the capsaicin is prepared by taking urushiol and N-hydroxymethyl acrylamide as main raw materials through Friedel-crafts reaction;
step 2: stirring the first mixture at 80 ℃ for 30min to dissolve the capsaicin and the anhydrous copper chloride in the anhydrous ethanol to obtain a first solution;
and step 3: and carrying out reflux reaction on the first solution for 4 hours to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
Example 4
A preparation method of a marine biofouling prevention coating comprises the following steps:
step 1: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 3: 0.25: 8.5, and adding the mixture into a three-neck flask to obtain a first mixture; the capsaicin is prepared by taking cardanol and N-hydroxymethyl acrylamide as main raw materials through Friedel-crafts reaction;
step 2: stirring the first mixture at 80 ℃ for 30min to dissolve the capsaicin and the anhydrous copper chloride in the anhydrous ethanol to obtain a first solution;
and step 3: and carrying out reflux reaction on the first solution for 7 hours to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
Example 5
A preparation method of a marine biofouling prevention coating comprises the following steps:
step 1: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 2: 0.17: 7.89, and adding the mixture into a three-neck flask to obtain a first mixture; the capsaicin is prepared by taking urushiol and N-hydroxymethyl acrylamide as main raw materials through Friedel-crafts reaction;
step 2: stirring the first mixture at 80 ℃ for 30min to dissolve the capsaicin and the anhydrous copper chloride in the anhydrous ethanol to obtain a first solution;
and step 3: and carrying out reflux reaction on the first solution for 5 hours to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
Example 6:
weighing 1.00g of cardanol type capsaicin, 0.10g of anhydrous copper chloride and 7.00g of anhydrous ethanol, adding the cardanol type capsaicin, 0.10g of anhydrous copper chloride and 7.00g of anhydrous ethanol into a 100ml three-neck flask, stirring for 15min at room temperature to completely dissolve the capsaicin and the copper chloride, then heating to 70 ℃, and carrying out reflux reaction for 4h to obtain the marine biofouling prevention coating.
Example 7:
weighing 4.00g of urushiol type capsaicin, 0.40g of anhydrous copper chloride and 10.00g of anhydrous ethanol, adding the obtained mixture into a 100ml three-neck flask, stirring the obtained mixture for 40min at room temperature to completely dissolve the capsaicin and the copper chloride, heating the obtained product to 90 ℃, and carrying out reflux reaction for 10h to obtain the marine biofouling prevention coating.
Example 8:
weighing 2.00g of urushiol type capsaicin, 0.17g of anhydrous copper chloride and 7.89g of anhydrous ethanol, adding the obtained mixture into a 100ml three-neck flask, stirring the obtained mixture for 30min at room temperature to completely dissolve the capsaicin and the copper chloride, heating the obtained product to 80 ℃, and carrying out reflux reaction for 5h to obtain the marine biofouling prevention coating. After the solution was dried in vacuo, the molecular weight was measured by GPC, and the Mw was 3.58 × 104.
The marine biofouling prevention coating prepared in the above example 8 was uniformly coated on a cleaned glass plate, and naturally dried at room temperature to form a film, and the obtained film was subjected to antibacterial performance study on escherichia coli and staphylococcus aureus;
the coating for preventing marine organism fouling prepared in example 8 is coated on a clean glass sheet, a clean blank glass sheet is used as a control test, a liquid transfer gun transfers an equal amount of bacterial liquid onto the glass sheet and a membrane, the glass sheet and the membrane are placed in a culture dish and sealed, the membrane is taken out after the membrane is placed in an incubator at 37 ℃ for culturing for 24 hours, the glass sheet and the sample membrane are fully leached by an equal amount of eluent, the eluted bacterial liquid is diluted to a set concentration value by a standard concentration gradient, an equal amount of bacterial-containing eluent is transferred onto a newly prepared LB culture medium and cultured in the incubator at 37 ℃ for 24 hours, the growth condition of bacteria is observed, and the bacteriostasis rate is calculated. Referring to fig. 1a and 1b, it can be seen that the marine biofouling prevention coating prepared by the present invention has a significant staphylococcus aureus resistance compared to a blank glass sheet; referring to fig. 2a and 2b, it can be seen that the marine biofouling prevention coating prepared according to the present invention has a significant e.coli resistance compared to the blank glass sheet.
Example 9:
3.00g of urushiol or cashew type capsaicin, 0.25g of anhydrous copper chloride and 8.80g of anhydrous ethanol are weighed and added into a 100ml three-neck flask, the mixture is stirred for 35min at room temperature to completely dissolve the capsaicin and the copper chloride, then the temperature is raised to 85 ℃, and the coating for preventing marine biofouling can be obtained after reflux reaction for 8 h.
Example five 10:
3.00g of urushiol or cashew type capsaicin, 0.35g of anhydrous copper chloride and 9.00g of anhydrous ethanol are weighed and added into a 100ml three-neck flask, the mixture is stirred for 30min at room temperature to completely dissolve the capsaicin and the copper chloride, then the temperature is raised to 75 ℃, and the coating for preventing marine biofouling can be obtained after reflux reaction for 7 h.
Example 11:
weighing 1.50g of urushiol or cashew type capsaicin, 0.20g of anhydrous copper chloride and 8.00g of anhydrous ethanol, adding the obtained mixture into a 100ml three-neck flask, stirring the obtained product at room temperature for 25min to completely dissolve the capsaicin and the copper chloride, heating the obtained product to 80 ℃, and carrying out reflux reaction for 5h to obtain the marine biofouling prevention coating.
Example 12:
weighing 2.50g of urushiol or cashew type capsaicin, 0.30g of anhydrous copper chloride and 9.50g of anhydrous ethanol, adding the obtained mixture into a 100ml three-neck flask, stirring at room temperature for 35min to completely dissolve the capsaicin and the copper chloride, heating to 85 ℃, and carrying out reflux reaction for 6h to obtain the marine biofouling prevention coating.
Example 13:
weighing 2.00g of urushiol or cashew type capsaicin, 0.20g of anhydrous copper chloride and 8.00g of anhydrous ethanol, adding the obtained mixture into a 100ml three-neck flask, stirring the obtained product at room temperature for 25min to completely dissolve the capsaicin and the copper chloride, heating the obtained product to 75 ℃, and carrying out reflux reaction for 5h to obtain the marine biofouling prevention coating.
Example 14:
weighing 1.50g of urushiol or cashew type capsaicin, 0.17g of anhydrous copper chloride and 7.50g of anhydrous ethanol, adding the obtained mixture into a 100ml three-neck flask, stirring the obtained product at room temperature for 25min to completely dissolve the capsaicin and the copper chloride, heating the obtained product to 70 ℃, and carrying out reflux reaction for 4h to obtain the marine biofouling prevention coating.
Example 15:
weighing 4.00g of urushiol or cardanol type capsaicin, 0.20g of anhydrous copper chloride and 9.50g of anhydrous ethanol, adding the obtained mixture into a 100ml three-neck flask, stirring the obtained product at room temperature for 40min to completely dissolve the capsaicin and the copper chloride, heating the obtained product to 85 ℃, and carrying out reflux reaction for 9h to obtain the marine biofouling prevention coating.
In conclusion, according to the preparation method of the coating for preventing marine biofouling, which is disclosed by the invention, the capsaicin-like polymer is prepared by catalytic polymerization of copper ions, and is applied to the antifouling coating, so that marine facilities can be effectively protected from biofouling; because the capsaicin is a natural product extracted from the capsicum, compared with the antifouling paint adopting antifouling agents such as cuprous oxide, organic tin, zinc oxide and the like in the traditional technology, the antifouling paint has better environmental protection property, and effectively avoids marine ecological pollution caused by gradual release of the paint in seawater.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (7)
1. A preparation method of a marine biofouling prevention coating is characterized by comprising the following steps:
step 1: mixing capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 1-4: 0.1-0.4: 7-10 to obtain a first mixture;
step 2: stirring the first mixture at 70-90 deg.C for 15-40min to dissolve capsaicin and anhydrous cupric chloride in anhydrous ethanol to obtain a first solution;
and step 3: carrying out reflux reaction on the first solution for 3-10h to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating;
the capsaicin is prepared by taking urushiol or cardanol and N-hydroxymethyl acrylamide as main raw materials through Friedel-crafts reaction.
2. The method for preparing the marine biofouling prevention coating according to claim 1, wherein the step 1 is: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 2-3: 0.15-0.25: 7.5-8.5, and adding into a three-neck flask to obtain a first mixture.
3. The method for preparing the marine biofouling prevention coating according to claim 1, wherein the step 1 is: the capsaicin, anhydrous copper chloride and anhydrous ethanol are mixed according to the mass ratio of 2: 0.17: 7.89, and added into a three-neck flask to obtain a first mixture.
4. The method for preparing the marine biofouling prevention coating according to claim 1, wherein the step 2 is: stirring the first mixture at 80 deg.C for 30min to dissolve the capsaicin and anhydrous cupric chloride in anhydrous ethanol to obtain a first solution.
5. The method for preparing the marine biofouling prevention coating according to claim 1, wherein the step 3 is: and carrying out reflux reaction on the first solution for 4-7h to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
6. The method for preparing the marine biofouling prevention coating according to claim 1, wherein the step 3 is: and carrying out reflux reaction on the first solution for 5 hours to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
7. The preparation method of the marine biofouling prevention coating according to claim 1, comprising the following steps:
step 1: mixing the capsaicin, anhydrous copper chloride and anhydrous ethanol according to the mass ratio of 2: 0.17: 7.89, and adding the mixture into a three-neck flask to obtain a first mixture; the capsaicin is prepared by taking urushiol or cardanol and N-hydroxymethyl acrylamide as main raw materials through Friedel-crafts reaction;
step 2: stirring the first mixture at 80 ℃ for 30min to dissolve the capsaicin and the anhydrous copper chloride in the anhydrous ethanol to obtain a first solution;
and step 3: and carrying out reflux reaction on the first solution for 5 hours to obtain a polymer solution, wherein the polymer solution is the marine organism fouling prevention coating.
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